diff --git a/framework/Volo.Abp.sln b/framework/Volo.Abp.sln
index e4b3d032a4c..d6518a0af3a 100644
--- a/framework/Volo.Abp.sln
+++ b/framework/Volo.Abp.sln
@@ -212,6 +212,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Volo.Abp.AspNetCore.Mvc.UI.
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Volo.Abp.EntityFrameworkCore.PostgreSql", "src\Volo.Abp.EntityFrameworkCore.PostgreSql\Volo.Abp.EntityFrameworkCore.PostgreSql.csproj", "{882E82F1-1A57-4BB9-B126-4CBF700C8F0C}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Volo.Abp.Localization.Abstractions", "src\Volo.Abp.Localization.Abstractions\Volo.Abp.Localization.Abstractions.csproj", "{20513A4E-FAC7-4106-8976-5D79A3BDFED1}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -598,6 +600,10 @@ Global
 		{882E82F1-1A57-4BB9-B126-4CBF700C8F0C}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{882E82F1-1A57-4BB9-B126-4CBF700C8F0C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{882E82F1-1A57-4BB9-B126-4CBF700C8F0C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{20513A4E-FAC7-4106-8976-5D79A3BDFED1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{20513A4E-FAC7-4106-8976-5D79A3BDFED1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{20513A4E-FAC7-4106-8976-5D79A3BDFED1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{20513A4E-FAC7-4106-8976-5D79A3BDFED1}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -700,6 +706,7 @@ Global
 		{D3E07597-BB3D-4249-B873-607E2C128C0E} = {447C8A77-E5F0-4538-8687-7383196D04EA}
 		{77A621CF-9562-411B-A707-C7C02CC3B8FA} = {5DF0E140-0513-4D0D-BE2E-3D4D85CD70E6}
 		{882E82F1-1A57-4BB9-B126-4CBF700C8F0C} = {5DF0E140-0513-4D0D-BE2E-3D4D85CD70E6}
+		{20513A4E-FAC7-4106-8976-5D79A3BDFED1} = {5DF0E140-0513-4D0D-BE2E-3D4D85CD70E6}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {BB97ECF4-9A84-433F-A80B-2A3285BDD1D5}
diff --git a/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs b/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs
index 5b48e6101ba..d7913f0d2d5 100644
--- a/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs
+++ b/framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinition.cs
@@ -28,6 +28,9 @@ public ILocalizableString DisplayName
         public IReadOnlyList<PermissionDefinition> Children => _children.ToImmutableList();
         private readonly List<PermissionDefinition> _children;
 
+        /// <summary>
+        /// Can be used to get/set custom properties for this permission definition.
+        /// </summary>
         public Dictionary<string, object> Properties { get; }
 
         /// <summary>
diff --git a/framework/src/Volo.Abp.Localization.Abstractions/Volo.Abp.Localization.Abstractions.csproj b/framework/src/Volo.Abp.Localization.Abstractions/Volo.Abp.Localization.Abstractions.csproj
new file mode 100644
index 00000000000..b4df348774d
--- /dev/null
+++ b/framework/src/Volo.Abp.Localization.Abstractions/Volo.Abp.Localization.Abstractions.csproj
@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\..\..\common.props" />
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <AssemblyName>Volo.Abp.Localization.Abstractions</AssemblyName>
+    <PackageId>Volo.Abp.Localization.Abstractions</PackageId>
+    <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>
+    <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
+    <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
+    <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
+    <RootNamespace />
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Volo.Abp.Core\Volo.Abp.Core.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/AbpLocalizationAbstractionsModule.cs b/framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/AbpLocalizationAbstractionsModule.cs
new file mode 100644
index 00000000000..0008b7d1bc0
--- /dev/null
+++ b/framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/AbpLocalizationAbstractionsModule.cs
@@ -0,0 +1,9 @@
+using Volo.Abp.Modularity;
+
+namespace Volo.Abp.Localization
+{
+    public class AbpLocalizationAbstractionsModule : AbpModule
+    {
+
+    }
+}
diff --git a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/FixedLocalizableString.cs b/framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/FixedLocalizableString.cs
similarity index 100%
rename from framework/src/Volo.Abp.Localization/Volo/Abp/Localization/FixedLocalizableString.cs
rename to framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/FixedLocalizableString.cs
diff --git a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/ILocalizableString.cs b/framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/ILocalizableString.cs
similarity index 100%
rename from framework/src/Volo.Abp.Localization/Volo/Abp/Localization/ILocalizableString.cs
rename to framework/src/Volo.Abp.Localization.Abstractions/Volo/Abp/Localization/ILocalizableString.cs
diff --git a/framework/src/Volo.Abp.Localization/Volo.Abp.Localization.csproj b/framework/src/Volo.Abp.Localization/Volo.Abp.Localization.csproj
index 0acdb086277..a512bfc580b 100644
--- a/framework/src/Volo.Abp.Localization/Volo.Abp.Localization.csproj
+++ b/framework/src/Volo.Abp.Localization/Volo.Abp.Localization.csproj
@@ -22,6 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\Volo.Abp.Localization.Abstractions\Volo.Abp.Localization.Abstractions.csproj" />
     <ProjectReference Include="..\Volo.Abp.Settings\Volo.Abp.Settings.csproj" />
     <ProjectReference Include="..\Volo.Abp.VirtualFileSystem\Volo.Abp.VirtualFileSystem.csproj" />
   </ItemGroup>
diff --git a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationModule.cs b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationModule.cs
index c94d881030a..3fcd90ac6d1 100644
--- a/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationModule.cs
+++ b/framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpLocalizationModule.cs
@@ -1,5 +1,4 @@
-using Microsoft.Extensions.DependencyInjection;
-using Volo.Abp.Localization.Resources.AbpValidation;
+using Volo.Abp.Localization.Resources.AbpValidation;
 using Volo.Abp.Modularity;
 using Volo.Abp.Settings;
 using Volo.Abp.VirtualFileSystem;
@@ -8,7 +7,8 @@ namespace Volo.Abp.Localization
 {
     [DependsOn(
         typeof(AbpVirtualFileSystemModule),
-        typeof(AbpSettingsModule)
+        typeof(AbpSettingsModule),
+        typeof(AbpLocalizationAbstractionsModule)
         )]
     public class AbpLocalizationModule : AbpModule
     {
diff --git a/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj b/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj
index 5d5da4549f4..6ba4d46c1f6 100644
--- a/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj
+++ b/framework/src/Volo.Abp.Settings/Volo.Abp.Settings.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\..\common.props" />
 
@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\Volo.Abp.Core\Volo.Abp.Core.csproj" />
+    <ProjectReference Include="..\Volo.Abp.Localization.Abstractions\Volo.Abp.Localization.Abstractions.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/AbpSettingsModule.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/AbpSettingsModule.cs
index ae6d61b0c82..8900e8e0a35 100644
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/AbpSettingsModule.cs
+++ b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/AbpSettingsModule.cs
@@ -1,7 +1,11 @@
-using Volo.Abp.Modularity;
+using Volo.Abp.Localization;
+using Volo.Abp.Modularity;
 
 namespace Volo.Abp.Settings
 {
+    [DependsOn(
+        typeof(AbpLocalizationAbstractionsModule)
+        )]
     public class AbpSettingsModule : AbpModule
     {
 
diff --git a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs
index d65d143362f..58726492c69 100644
--- a/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs
+++ b/framework/src/Volo.Abp.Settings/Volo/Abp/Settings/SettingDefinition.cs
@@ -1,15 +1,32 @@
-namespace Volo.Abp.Settings
+using System.Collections.Generic;
+using JetBrains.Annotations;
+using Volo.Abp.Localization;
+
+namespace Volo.Abp.Settings
 {
     public class SettingDefinition
     {
         /// <summary>
         /// Unique name of the setting.
         /// </summary>
+        [NotNull]
         public string Name { get; }
 
+        [NotNull]
+        public ILocalizableString DisplayName
+        {
+            get => _displayName;
+            set => _displayName = Check.NotNull(value, nameof(value));
+        }
+        private ILocalizableString _displayName;
+
+        [CanBeNull]
+        public ILocalizableString Description { get; set; }
+
         /// <summary>
         /// Default value of the setting.
         /// </summary>
+        [CanBeNull]
         public string DefaultValue { get; set; }
 
         /// <summary>
@@ -26,24 +43,27 @@ public class SettingDefinition
         public bool IsInherited { get; set; }
 
         /// <summary>
-        /// Can be used to store a custom object related to this setting.
+        /// Can be used to get/set custom properties for this setting definition.
         /// </summary>
-        public object CustomData { get; set; } //TODO: Convert to dictionary!
-
-        //TODO: Add Properties dictionary for custom stuff (and remove CustomData)
+        [NotNull]
+        public Dictionary<string, object> Properties { get; }
 
         public SettingDefinition(
             string name,
             string defaultValue = null,
+            ILocalizableString displayName = null,
+            ILocalizableString description = null,
             bool isVisibleToClients = false,
-            bool isInherited = true,
-            object customData = null)
+            bool isInherited = true)
         {
             Name = name;
             DefaultValue = defaultValue;
             IsVisibleToClients = isVisibleToClients;
+            DisplayName = displayName ?? new FixedLocalizableString(name);
+            Description = description;
             IsInherited = isInherited;
-            CustomData = customData;
+
+            Properties = new Dictionary<string, object>();
         }
     }
 }
\ No newline at end of file